Nitrogen management practice effect on tile drainage water quality.
Long-term N fertilization rate and crop rotation effect on corn and soybean production.
Modeling corn yield response to N rate.
Corn nitrogen rate response comparison between tilled and no-till systems.
Surrogate measurement methods for nitrate-N loss in tile drainage.
Integrating rye seed production and red clover cover into corn production systems and nitrogen management.
Sulfur product evaluation and soil sulfur mineralization.